1.MKS UPS24V can only be used for DC24V power. 2.Motherboard needs to use Marlin2.0 firmware with 12864/2004 LCD screen. 3.Temporarily does not support for MKS Robin series (except for Robin E3/) and MKS TFT screen. 4.MKS UPS24V modules detect external AC power supply. Working process: 1. When AC power supply is cut off, the MKS UPS detects it and send signal to motherboard; 2. The power stored in the MKS UPS and PSU continues to supply power to the motherboard; 3. Motherboard detects the power-off signal, stop printing, turn off hotbed and hotend, lift z axis; 4. The power stored in MKS UPS is generally lift z axis 20mm-200mm; 5. When power supply is restored,resume printing through the 12864/2004 LCD screen. colour: black Material: ABS Package Contents: 1 x MKS UPS 24V module 2 cable 1 x 3pin motherboard link line Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.